Why a consistent estimate of iNDF is important if defining forage quality and in modeling animal responses (ie voluntary feed intake) to forage digestibility?
iNDF correlate well with feed intake wich is an important key in forage quality estimation. Please check: https://jukuri.luke.fi/bitstream/handle/10024/463517/mtt-afs-v15n3p293.pdf?sequence=1&isAllowed=y
Also check https://www.sciencedirect.com/science/article/pii/S1751731108001924/pdf?md5=30ace73d1ed65cf9e1b433c87ff187d9&pid=1-s2.0-S1751731108001924-main.pdf